期刊论文

Optimization of propoxur degradation by immobilized mixed bacteria

中文

湖南农业大学学报(自然科学版)

1007-1032

2019

45

6

624-631

10.13331/j.cnki.jhau.2019.06.010

湖南省自然科学基金项目（2018JJ5015）； 长沙市科学技术局项目（kq1801021）；

本校为第一机构

从海利(常德)农药化工有限公司废水处理池污水中分离得到2株耐盐残杀威降解细菌CS1和CS2,经形态特征、生理生化鉴定及16S rDNA序列分析,2菌株均属于不动杆菌(Acinetobacter sp.)。以处于对数生长期的CS1和CS2菌株菌悬液分别按照体积比为1∶1、1∶1.5、1∶2、1∶2.5、1∶3、1.5∶1、2∶1、2.5∶1、3∶1复配成混合菌剂,结果CS1和CS2菌悬液体积比为1.5∶1(M6)时,对残杀威的降解率最高,达到72.68%。采用海藻酸钠(SA)–活性炭、聚乙二醇(PVA)–活性炭及PVA–SA–活性炭3种组合材料对M6进行包埋,PVA–SA–活性炭固定化M6对残杀威的降解率为73.22%。采用正交试验对影响残杀威降解效率的4个主要因素(残杀...

Two strains of salt-resistant propoxur-degrading bacteria CS1 and CS2 were isolated from the waste water treatment tank of Hali (Changde) Pesticide Chemical Co., ltd., and identified as Acinetobacter sp. through morphological characteristics, physiological and biochemical identification and 16S rDNA sequence analysis. The suspensions of CS1 and CS2 strains in the logarithmic growth stage were compounded into mixed bacterial agents according to the volume ratio of 1∶1, 1∶1.5, 1∶3, 1.5∶1, 2∶1, 2.5∶1 and 3∶1, respectively. Results showed th...